* regset.h (fixed_reg_set_regset): Declare.

        * dse.c: Include regset.h .
        (struct insn_info): Add member fixed_regs_live.
        (note_add_store_info): New typedef.
        (note_add_store): New function.
        (emit_inc_dec_insn_before): Expect arg to be of type insn_info_t .
        Use gen_add3_insn / gen_move_insn.
        Check new insn for unwanted clobbers before emitting it.
        (check_for_inc_dec): Rename to...
        (check_for_inc_dec_1:) ... this.  Return bool.  Take insn_info
        parameter.  Changed all callers in file.
        (check_for_inc_dec, copy_fixed_regs): New functions.
        (scan_insn): Set fixed_regs_live field of insn_info.
        * rtl.h (check_for_inc_dec): Update prototype.
        * postreload.c (reload_cse_simplify): Take new signature of
        check_ind_dec into account.
        * reginfo.c (fixed_reg_set_regset): New variable.
        (init_reg_sets_1): Initialize it.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181046 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 4 deletions

diff --git a/gcc/postreload.c b/gcc/postreload.c
index 8994366d922..886d024926c 100644
--- a/gcc/postreload.c
+++ b/gcc/postreload.c
@@ -112,8 +112,8 @@ reload_cse_simplify (rtx insn, rtx testreg)
 	  if (REG_P (value)
 	      && ! REG_FUNCTION_VALUE_P (value))
 	    value = 0;
-	  check_for_inc_dec (insn);
-	  delete_insn_and_edges (insn);
+	  if (check_for_inc_dec (insn))
+	    delete_insn_and_edges (insn);
 	  return;
 	}
 
@@ -164,8 +164,8 @@ reload_cse_simplify (rtx insn, rtx testreg)
 
       if (i < 0)
 	{
-	  check_for_inc_dec (insn);
-	  delete_insn_and_edges (insn);
+	  if (check_for_inc_dec (insn))
+	    delete_insn_and_edges (insn);
 	  /* We're done with this insn.  */
 	  return;
 	}